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LicenseThis image is released under a CC BY-NC-SA 4.0 Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseThis image is released under a CC BY-NC-SA 4.0 Licence
Buy this image as a print
BuyLicense this image for commercial use at Science and Society Picture Library
LicenseSix inch silver sector signed "Ramsden
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Six inch silver sector signed "Ramsden
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Six inch silver sector signed "Ramsden
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Six inch silver sector signed "Ramsden, London" with attached set square, late 18th century. Sectors were used from the end of the 16th century until the mid 19th century for calculations involving proportion. They were ingraved with logarithmic and trigonometric lines, and lines for drawing and calculating surfaces and volumes.
Details
- Category:
- Mathematics
- Object Number:
- 1971-82
- Materials:
- silver
- Measurements:
-
overall (lying flat): 2.5 mm x 160 mm x 69 mm, .158 kg
- type:
- sector
- credit:
- Caiger, J.
